Improvement in car-springs



BILLINGS & TYLER.

Car Spring;

A UNITED STATES PATENT OFFICE.

J. D. BILLINGS ANDF. L. TYLER, OF RUTLAND, VERMONT.`

IMPROVEMENT IN CAR-SPRINGS.

Speciiication forming part of Letters Patent No. 39,7531, dated September 8, 1863.

.To a/ZZ whom t may concern:

Be it known that we, J. D. BILLINGS and F. L. TYLER, both of Rutland, in the county of Rutland and State ot' Vermont, have invented anew and Improved Spring for RailroadCars 5 and we do hereby declare that the followingl is a full, clear, and exact description of the same, reference being had to the accompanying drawings, making a part of this specitication, in which- Figure l is a vertical section of our invention, taken in the line .t ar, Fig. 3; Fig. 2, a Vertical section of the same, taken in the line y y, Fig. 3; Fig. 3, a plan or top view of the same.

Similar letters of reference indicate corresponding parts in the several figures.

This invention consists in the employment or use of metal torsion-sprin gs arranged and applied in such a manner as to admit of a proper yielding movement to the car and at the same time be capable of being constructed at a small cost and not he liable to get out of repair or become deranged by use.

To enable those skilled in the art to fully understand and construct our invention, We will proceed to describe it.

A represents the upper part of the frame of a cartruck, a being the upper cross-beam, and l) b b b longitudinal metal bars attached atright angles to a and parallel with each other. (See Fig. 3.) The outer metal bars, b b', are each formed of two parts, l 2, the part l being dat and in a horizontal position, and the part 2 bent so as to incline upward at vboth sides of the beam c, as shown atax, and have a dat horizontal part, bx, parallel with and at some distance above the lower part, 1. (See Figs. 1 and 2.) The two inner bars, b b, have each a clamp, B, attached to them, each clamp having the ends of one or more steel bars, G C, secured in them, said bars having an inclined position in their transverse section, as shown in Figs. l and 2. 'Ihe clamps B are composed each ota cap-plate, c, bolted down upon blocks d d, which are attached to the bars b b, and between which blocks and the cap-plates c one steel bar or more, (l, are secured. The outer ends of the bars C, which are the springs, are firmly fitted in arms or levers D, the shape of whichis clearly shown in Figs. l and 2. These arms or levers may be arranged in diii'erent ways 5 but their operation and action upon the springs are the same in all cases. In Fig. 1

the arms or levers are suspended by stirrups e from the ends of a plate f, which lies on the horizontal part b ot' the bar b.

E represents a metal block, which rests upon 4the inner ends of the-arms or levers D D, and

through this block a shaft, g, passes, having a friction-roller, h, on each end of it, the carbed resting on these friction-rollers. The block E is provided at its front and back ends with teni -ns or projections t', which fit and work between guide rods j, the latter passing over the top of the plate f, and then down through the cross-beam a, and having nuts` It on their lower ends, said guide-rods serving also to se cure the plate fon the part bX of the bar b. When this arrangement is used, it will be understood that it is applied to both bars b', and it will be seen that the weight of the car and its contents are transmitted to the inner ends of the arms or levers D, and, as the inner ends of said arms or levers are depressed the bars or springs C will be twisted. When the arms or levers D descend to a`c-ertain point, the outer edges of the block E will in consequence come in contact with the arms or levers, as indicated in red in Fig. l, and the leverage being thus shortened the springs are not rendered liable to be overtaxed by any undue weight.

Fig. 2 is an illustration of a modification ot' Fig. 1. In this case the arms or levers D, instead of being suspended by stirrup, as shown in Fig. l, rest or bear upon or against a plate, F, one end of which has a semi-cylindrical projection, l, on which one of the arms or levers rests, and the opposite end being curved, as shown at m, to form a bearing for the other arm or lever. The operation is precisely the same as in the iirst'described arrangement. By this arrangement a good and durable steel and metalv spring is obtained at a very modcrate cost.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-

The torsion-springs C, in connection with the arms or levers D, and block E, arranged to operate in the manner, as and-for the pur! pose herein set forth.

J. D. BILLINGS. F. L. TYLER.

Witnesses: H. G. CLARK,

H. A. SAWYER. 

